System for fourier domain optical coherence tomography
    51.
    发明授权
    System for fourier domain optical coherence tomography 有权
    傅立叶光学相干断层扫描系统

    公开(公告)号:US09448056B2

    公开(公告)日:2016-09-20

    申请号:US12759029

    申请日:2010-04-13

    申请人: Joseph A. Izatt

    发明人: Joseph A. Izatt

    IPC分类号: G01B9/02

    摘要: Optical coherence tomography (OCT) is an imaging method which can image with micrometer-scale resolution up to a few millimeters deep into, for example, living biological tissues and preserved tissue samples. An improved apparatus and image reconstruction algorithm for parallel Fourier Domain OCT which greatly eases requirements for interferometer stability and also allows for more efficient parallel image acquisition is provided. The apparatuses and algorithms reconstruct images from interfered, low-coherence, multiwave length signals having a .pi. radian phase difference relative to one another. Other numbers of signals and other phase differences may be alternatively used, with some combinations resulting in higher resolution and image stability. The apparatus also eliminates a need for bulk optics to modulate a phase delay in a reference arm of the optical path. Images may be reconstructed using two spectrometers, where each is coupled to a detector array such as a photodiode array.

    摘要翻译: 光学相干断层扫描(OCT)是一种成像方法,可以将尺寸分辨率高达几毫米的微米尺度分辨率成像到例如活的生物组织和保留的组织样本中。 提供了一种用于并行傅立叶域OCT的改进的装置和图像重建算法,其大大减轻了干涉仪稳定性的要求,并且还提供了更有效的并行图像采集。 装置和算法从具有.pi的干扰,低相干,多波长信号重构图像。 弧度相位差相对于彼此。 可以替代地使用其他数量的信号和其它相位差,其中一些组合导致更高的分辨率和图像稳定性。 该装置还消除了对光学路径的参考臂中的相位延迟调制体光学器件的需要。 可以使用两个光谱仪重建图像,其中每个光谱仪耦合到诸如光电二极管阵列的检测器阵列。

    Optical coherence tomography (OCT) imaging systems having adaptable lens systems and related methods and computer program products
    52.
    发明授权
    Optical coherence tomography (OCT) imaging systems having adaptable lens systems and related methods and computer program products 有权
    光学相干断层扫描(OCT)成像系统具有适应性透镜系统及相关方法和计算机程序产品

    公开(公告)号:US08783866B2

    公开(公告)日:2014-07-22

    申请号:US12429323

    申请日:2009-04-24

    IPC分类号: A61B3/10 A61B3/14 A61B5/00

    摘要: OCT imaging systems are provided for imaging a spherical-type eye including a source having an associated source arm path and a reference arm having an associated reference arm path coupled to the source path. The reference arm path has an associated reference arm path length. A sample is also provided having an associated sample arm path coupled to the source arm and reference arm paths. A lens having a focal power optimized for a diameter of the spherical-type eye is provided along with a reference arm path length adjustment module coupled to the reference arm. The reference arm path length adjustment module is configured to automatically adjust the reference arm path length such that the reference arm path length is based on an eye diameter of the subject.

    摘要翻译: 提供OCT成像系统用于对球形眼睛进行成像,该眼球包括具有相关联的源臂路径的源和具有耦合到源路径的相关参考臂路径的参考臂。 参考臂路径具有相关联的参考臂路径长度。 还提供具有与源臂和参考臂路径相连的相关联的样本臂路径的样本。 具有针对球形眼的直径优化的聚焦功率的透镜与连接到参考臂的参考臂路径长度调节模块一起提供。 参考臂路径长度调节模块被配置为自动调整参考臂路径长度,使得参考臂路径长度基于被摄体的眼睛直径。

    Methods for single-pass volumetric bidirectional blood flow imaging spectral domain optical coherence tomography using a modified hilbert transform
    53.
    发明授权
    Methods for single-pass volumetric bidirectional blood flow imaging spectral domain optical coherence tomography using a modified hilbert transform 有权
    使用修改的希尔伯特变换的单程体积双向血流成像光谱相干光学相干断层扫描的方法

    公开(公告)号:US08718743B2

    公开(公告)日:2014-05-06

    申请号:US12386945

    申请日:2009-04-24

    IPC分类号: A61B5/00

    摘要: The present subject matter relates to in vivo volumetric bidirectional blood flow imaging using single-pass flow imaging spectral domain optical coherence tomography. This technique uses a modified Hilbert transform algorithm to separate moving and non-moving scatterers within a depth. The resulting reconstructed image maps the components of moving scatterers flowing into and out of the imaging axis onto opposite image halfplanes, enabling volumetric bidirectional flow mapping without manual segmentation.

    摘要翻译: 本主题涉及使用单程流动成像光谱相干层析成像的体内双向血流成像。 该技术使用修改的希尔伯特变换算法来分离深度内的移动和非移动散射体。 所得到的重建图像将流入和流出成像轴的移动散射体的分量映射到相对图像半平面上,使得能够进行体积双向流映射而无需手动分割。

    Methods and computer program products for quantitative three-dimensional image correction and clinical parameter computation in optical coherence tomography
    54.
    发明授权
    Methods and computer program products for quantitative three-dimensional image correction and clinical parameter computation in optical coherence tomography 有权
    光学相干断层扫描中定量三维图像校正和临床参数计算的方法和计算机程序产品

    公开(公告)号:US08693745B2

    公开(公告)日:2014-04-08

    申请号:US12799890

    申请日:2010-05-04

    IPC分类号: G06K9/00

    摘要: Methods and computer program products for quantitative three-dimensional (“3D”) image correction in optical coherence tomography. Using the methods and computer program products, index interface (refracting) surfaces from the raw optical coherence tomography (“OCT”) dataset from an OCT system can be segmented. Normal vectors or partial derivatives of the curvature at a refracting surface can be calculated to obtain a refracted image voxel. A new position of each desired refracted image voxel can be iteratively computed. New refracted corrected voxel positions to an even sampling grid can be interpolated to provide corrected image data. In some embodiments, clinical outputs from the corrected image data can be computed.

    摘要翻译: 光学相干断层扫描中定量三维(“3D”)图像校正的方法和计算机程序产品。 使用方法和计算机程序产品,可以对来自OCT系统的原始光学相干断层扫描(“OCT”)数据集的索引接口(折射)表面进行分割。 可以计算折射表面处的曲率的法向矢量或偏导数,以获得折射的图像体素。 可以迭代地计算每个期望的折射图像体素的新位置。 可以将针对均匀采样网格的新的折射校正体素位置进行内插以提供校正的图像数据。 在一些实施例中,可以计算来自校正图像数据的临床输出。

    Systems for imaging structures of a subject and related methods
    56.
    发明授权
    Systems for imaging structures of a subject and related methods 有权
    主题成像结构系统及相关方法

    公开(公告)号:US08534837B2

    公开(公告)日:2013-09-17

    申请号:US13545239

    申请日:2012-07-10

    IPC分类号: A61B3/14 A61B3/00

    摘要: Systems for imaging structures of a subject are provided. The subject has an optical axis, a pupil, and a nodal point. The system includes an image capture device; a first structure including a mount for the subject to be imaged by the image capture device, the first structure providing at least two rotational degrees of freedom; a second structure including a mount for the image capture device, the second structure providing at least two translational degrees of freedom; and a means for aligning the image capture device in relation to the optical axis, the pupil, and the nodal point of the subject.

    摘要翻译: 提供了一种用于受试者的成像结构的系统。 受试者具有光轴,瞳孔和节点。 该系统包括图像捕获装置; 第一结构,其包括用于由所述图像捕获装置成像的被摄体的安装座,所述第一结构提供至少两个旋转自由度; 第二结构,包括用于图像捕获装置的安装件,第二结构提供至少两个平移自由度; 以及用于将图像捕获装置相对于对象的光轴,瞳孔和节点对准的装置。

    Methods, systems and computer program products for analyzing three dimensional data sets obtained from a sample
    58.
    发明授权
    Methods, systems and computer program products for analyzing three dimensional data sets obtained from a sample 有权
    用于分析从样本获得的三维数据集的方法,系统和计算机程序产品

    公开(公告)号:US07869663B2

    公开(公告)日:2011-01-11

    申请号:US11461083

    申请日:2006-07-31

    IPC分类号: G06K9/00 G06K9/36 G06K9/32

    摘要: Methods of analyzing three dimensional data sets obtained from a sample over time are provided. A first three dimensional data set is obtained from the sample at a first time. A first volume intensity projection (VIP) image is created from the first three dimensional data set. One or more first landmarks are identified and registered in the first VIP image. A second three dimensional data set is obtained from the sample at a second time, different from the first time. A second VIP image is created from the second three dimensional data set. The one ore more first landmarks are identified and registered in the second VIP image. The first and second VIP images are aligned based on the registered one or more first landmarks in the first and second VIP images. Related systems and computer program products are also provided.

    摘要翻译: 提供了一种随时间分析从样本获得的三维数据集的方法。 在第一时间从样本获得第一三维数据集。 从第一三维数据集创建第一体积强度投影(VIP)图像。 在第一VIP图像中识别并登记一个或多个第一地标。 第二个三维数据集从第二次获得,与第一次不同。 从第二个三维数据集创建第二个VIP图像。 在第二个VIP图像中识别并注册了一个更多的第一个地标。 基于第一和第二VIP图像中登记的一个或多个第一地标对准第一和第二VIP图像。 还提供了相关系统和计算机程序产品。

    Methods and Systems for Removing Undesired Artifacts in Fourier Domain Optical Coherence Tomography (FDOCT) Systems Using Continuous Phase Modulation and Related Phase Modulators
    60.
    发明申请
    Methods and Systems for Removing Undesired Artifacts in Fourier Domain Optical Coherence Tomography (FDOCT) Systems Using Continuous Phase Modulation and Related Phase Modulators 有权
    用于使用连续相位调制和相位相位调制器在傅里叶域光学相干断层扫描(FDOCT)系统中去除不想要的人工物的方法和系统

    公开(公告)号:US20100231917A1

    公开(公告)日:2010-09-16

    申请号:US12775782

    申请日:2010-05-07

    IPC分类号: G01J3/45

    摘要: Methods, fourier domain optical coherence tomography (FDOCT) interferometers and computer program products are provided for removing undesired artifacts in FDOCT systems using continuous phase modulation. A variable phase delay is introduced between a reference arm and a sample arm of an FDOCT interferometer using continuous phase modulation. Two or more spectral interferograms having different phase delay integration times are generated. The spectral interferograms are combined using signal processing to remove the undesired artifacts. Systems and methods for switching between stepped and continuous phase shifting Fourier domain optical coherence tomography (FDOCT) and polarization-sensitive optical coherence tomography (PSOCT) are also provided herein.

    摘要翻译: 方法提供了傅立叶变换光学相干断层扫描(FDOCT)干涉仪和计算机程序产品,用于消除使用连续相位调制的FDOCT系统中的不期望的伪影。 在使用连续相位调制的FDOCT干涉仪的参考臂和样品臂之间引入可变相位延迟。 产生具有不同相位延迟积分时间的两个或更多个光谱干涉图。 使用信号处理来组合光谱干涉图以去除不想要的伪像。 本文还提供了阶梯式和连续相移傅立叶域光学相干断层扫描(FDOCT)与偏振光敏光学相干断层扫描(PSOCT)之间切换的系统和方法。